173 lines
3.3 KiB
Rust
173 lines
3.3 KiB
Rust
use std::fmt;
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use futures::{Stream, Poll, Async};
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use bytes::Bytes;
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/// An asynchronous `Stream`.
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pub struct Body {
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inner: Inner,
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}
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enum Inner {
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Reusable(Bytes),
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Hyper(::hyper::Body),
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}
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impl Body {
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fn poll_inner(&mut self) -> &mut ::hyper::Body {
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match self.inner {
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Inner::Hyper(ref mut body) => body,
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Inner::Reusable(_) => unreachable!(),
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}
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}
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}
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impl Stream for Body {
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type Item = Chunk;
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type Error = ::Error;
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#[inline]
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fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
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match try_!(self.poll_inner().poll()) {
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Async::Ready(opt) => Ok(Async::Ready(opt.map(|chunk| Chunk {
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inner: chunk,
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}))),
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Async::NotReady => Ok(Async::NotReady),
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}
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}
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}
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impl From<Bytes> for Body {
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#[inline]
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fn from(bytes: Bytes) -> Body {
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reusable(bytes)
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}
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}
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impl From<Vec<u8>> for Body {
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#[inline]
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fn from(vec: Vec<u8>) -> Body {
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reusable(vec.into())
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}
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}
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impl From<&'static [u8]> for Body {
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#[inline]
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fn from(s: &'static [u8]) -> Body {
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reusable(Bytes::from_static(s))
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}
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}
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impl From<String> for Body {
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#[inline]
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fn from(s: String) -> Body {
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reusable(s.into())
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}
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}
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impl From<&'static str> for Body {
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#[inline]
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fn from(s: &'static str) -> Body {
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s.as_bytes().into()
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}
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}
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/// A chunk of bytes for a `Body`.
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///
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/// A `Chunk` can be treated like `&[u8]`.
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#[derive(Default)]
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pub struct Chunk {
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inner: ::hyper::Chunk,
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}
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impl AsRef<[u8]> for Chunk {
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#[inline]
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fn as_ref(&self) -> &[u8] {
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&*self
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}
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}
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impl ::std::ops::Deref for Chunk {
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type Target = [u8];
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#[inline]
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fn deref(&self) -> &Self::Target {
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self.inner.as_ref()
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}
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}
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impl Extend<u8> for Chunk {
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fn extend<T>(&mut self, iter: T)
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where T: IntoIterator<Item=u8> {
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self.inner.extend(iter)
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}
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}
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impl IntoIterator for Chunk {
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type Item = u8;
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//XXX: exposing type from hyper!
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type IntoIter = <::hyper::Chunk as IntoIterator>::IntoIter;
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fn into_iter(self) -> Self::IntoIter {
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self.inner.into_iter()
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}
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}
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impl fmt::Debug for Body {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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f.debug_struct("Body")
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.finish()
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}
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}
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impl fmt::Debug for Chunk {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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fmt::Debug::fmt(&self.inner, f)
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}
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}
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// pub(crate)
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#[inline]
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pub fn wrap(body: ::hyper::Body) -> Body {
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Body {
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inner: Inner::Hyper(body),
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}
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}
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#[inline]
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pub fn take(body: &mut Body) -> Body {
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use std::mem;
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let inner = mem::replace(&mut body.inner, Inner::Hyper(::hyper::Body::empty()));
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Body {
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inner: inner,
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}
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}
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#[inline]
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pub fn empty() -> Body {
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Body {
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inner: Inner::Hyper(::hyper::Body::empty()),
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}
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}
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#[inline]
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pub fn chunk(chunk: Bytes) -> Chunk {
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Chunk {
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inner: ::hyper::Chunk::from(chunk)
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}
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}
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#[inline]
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pub fn reusable(chunk: Bytes) -> Body {
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Body {
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inner: Inner::Reusable(chunk),
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}
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}
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#[inline]
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pub fn into_hyper(body: Body) -> (Option<Bytes>, ::hyper::Body) {
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match body.inner {
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Inner::Reusable(chunk) => (Some(chunk.clone()), chunk.into()),
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Inner::Hyper(b) => (None, b),
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}
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}
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